CN200941258Y - Air transaudient demonstrator - Google Patents
Air transaudient demonstrator Download PDFInfo
- Publication number
- CN200941258Y CN200941258Y CN 200620085351 CN200620085351U CN200941258Y CN 200941258 Y CN200941258 Y CN 200941258Y CN 200620085351 CN200620085351 CN 200620085351 CN 200620085351 U CN200620085351 U CN 200620085351U CN 200941258 Y CN200941258 Y CN 200941258Y
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- CN
- China
- Prior art keywords
- demonstration
- demonstrator
- fixed frame
- demonstration device
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
An airborne demonstrator used for showing the airborne experiment in teaching which comprises two same and independent demonstrators and a knocker. Each demonstrator comprises a base which is fixed with a fixed frame and a plastic film is fixed inside the fixed frame, wherein the upper jamb of the fixed frame of one demonstrator is connected with a thin string, the lower end of which is connected with a demonstrating ball against the surface of the plastic film. When showing students the fact that air can transmit sound, the utility model makes the demonstrating ball at the outside of the plastic film of one demonstrator vibrate by knocking the plastic of one demonstrator with the knocker, producing an obvious effect.
Description
Technical field
The utility model relates to a kind of teaching appliance, relates in particular to a kind of airborne sound demonstration device.
Background technology
Air can transaudient this fact, and the student can both experience from life, but the oscillation phenomenon when being difficult to observe airborne sound.With knocking the tuning fork of same frequency, it is resonated demonstrates this phenomenon in the teaching material, but during experiment almost without any effect.
Summary of the invention
The purpose of this utility model provides the tangible airborne sound demonstration device of a kind of experiment effect.
For achieving the above object, the technical solution adopted in the utility model is: a kind of airborne sound demonstration device is characterized in that: comprise two identical, demonstration devices and knock and beat independently; Each demonstration device comprises: base, be fixedly connected with fixed frame on the base, and the fixed frame internal fixation is connected with plastic foil; The upper side frame of one of them demonstration device fixed frame is connected with cord, and the lower end of cord is connected with the demonstration ball, and the demonstration ball leans against the plastic foil surface.
Described airborne sound demonstration device is characterized in that: knock to beat to rubber and beat; The demonstration ball is a table tennis.
The utility model show to the student air can be transaudient this when true, by beating the plastic foil that knocks one of them demonstration device, make the table tennis in the another one demonstration device plastic foil outside produce vibration with knocking, effect is obvious.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
In the accompanying drawing: 1, base; 2, demonstration ball; 3, plastic foil; 4, fixed frame 5, cord; 6, knock and beat.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described: a kind of airborne sound demonstration device as shown in Figure 1, comprises two identical, demonstration devices and knock and beat 6 independently; Each demonstration device comprises: base 1, be fixedly connected with fixed frame 4 on the base 1, and fixed frame 4 internal fixation are connected with plastic foil 3; The upper side frame of one of them demonstration device fixed frame 4 is connected with cord 5, and the lower end of cord 5 is connected with demonstration ball 2, and demonstration ball 2 leans against plastic foil 3 surfaces; In the present embodiment, knock and beat 6 and beat or wood is beaten for rubber; Demonstration ball 2 is the lightweight ball, as table tennis.
The utility model is when making, and the demonstration ball adopts the lightweight ball, as table tennis, makes table tennis be positioned at the center of plastic foil.When using the utility model demonstration airborne sound experiment, with these two identical, independently demonstration device is placed on the horizontal table top, make before and after their corresponding, and parallel to each other, at a distance of 20～30cm over against placement; The demonstration device that makes the band table tennis is preceding, another demonstration device after, and table tennis is positioned at the front of its place demonstration device.Beat or wood is beaten the plastic foil center of knocking the back demonstration device with rubber, table tennis just can be beated, and hand can obviously be experienced vibration when touching the fixed frame of table tennis place demonstration device.
Claims (2)
1, a kind of airborne sound demonstration device is characterized in that: comprise two identical, demonstration devices and knock and beat (6) independently; Each demonstration device comprises: base (1), be fixedly connected with fixed frame (4) on the base (1), and fixed frame (4) internal fixation is connected with plastic foil (3); The upper side frame of one of them demonstration device fixed frame (4) is connected with cord (5), and the lower end of cord (5) is connected with demonstration ball (2), and demonstration ball (2) leans against plastic foil (3) surface.
2, airborne sound demonstration device according to claim 1 is characterized in that: described knocking beaten (6) and beaten for rubber; Described demonstration ball (2) is a table tennis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085351 CN200941258Y (en) | 2006-06-03 | 2006-06-03 | Air transaudient demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085351 CN200941258Y (en) | 2006-06-03 | 2006-06-03 | Air transaudient demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200941258Y true CN200941258Y (en) | 2007-08-29 |
Family
ID=38747435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620085351 Expired - Fee Related CN200941258Y (en) | 2006-06-03 | 2006-06-03 | Air transaudient demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200941258Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610144A (en) * | 2012-01-31 | 2012-07-25 | 刘海洋 | Experimental box for transmitting sound |
| CN111145620A (en) * | 2020-01-20 | 2020-05-12 | 艾迪技术创新私人有限公司 | Teaching apparatus for demonstrating sound transmission through air |
-
2006
- 2006-06-03 CN CN 200620085351 patent/CN200941258Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610144A (en) * | 2012-01-31 | 2012-07-25 | 刘海洋 | Experimental box for transmitting sound |
| CN111145620A (en) * | 2020-01-20 | 2020-05-12 | 艾迪技术创新私人有限公司 | Teaching apparatus for demonstrating sound transmission through air |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |